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ratite , ratite A flightless, running bird that has no keel on its sternum. Aepyornithidae, Apterygidae, Casuariidae, Dinornithidae, Dromaiidae, Rheidae, and… Bird , Birds A bird is a warm-blooded vertebrate (an animal with a backbone) that has feathers, a beak, and two wings. Its most unique feature is the abilit… Fly (river) , fly1 / flī/ • v. (flies / flīz/ ; past flew / floō/ ; past part. flown / flōn/ ) [intr.] 1. (of a bird or other winged creature) move through the air… Ornithology , Ornithology is the branch of zoology that deals with birds. It includes the study of the development, anatomy (structure), physiology (function), beh… Flying Dragon , flying dragon (Draco volans) See AGAMIDAE. Flying Lemur , flying lemur (Cynocephalus) See CYNOCEPHALIDAE.
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